void inc_sp(int i) { set_sp(sp() + i); }
// Push an exception in the canonical position for handlers (stack(0)).
void push_ex_oop(Node* ex_oop) {
ensure_stack(1); // ensure room to push the exception
set_stack(0, ex_oop);
set_sp(1);
clean_stack(1);
}
void dec_sp(int i) {
set_sp(sp() - i);
}
